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+.\" -*- nroff -*-
+.TH CHATTR 1 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@"
+.SH NAME
+chattr \- change file attributes on a Linux second extended file system
+.SH SYNOPSIS
+.B chattr
+[
+.B \-RV
+]
+[
+.B -v
+version
+]
+[
+mode
+]
+.I files...
+.SH DESCRIPTION
+.B chattr
+changes the files attributes on an second extended file system.
+.PP
+The format of a symbolic mode is +-=[Sacdisu].
+.PP
+The operator `+' causes the selected attributes to be added to the
+existing attributes of the files; `-' causes them to be removed; and
+`=' causes them to be the only attributes that the files have.
+.PP
+The letters `Sacdisu' select the new attributes for the files: synchronous
+updates (S), append only (a), compressed (c), immutable (i), no dump (d),
+secure deletion (s), and undeletable (u).
+.SH OPTIONS
+.TP
+.I -R
+Recursively change attributes of directories and their contents.
+.TP
+.I -V
+Verbosely describe changed attributes.
+.TP
+.I -v version
+Set the files version.
+.SH ATTRIBUTES
+A file with the `a' attribute set can only be open in append mode for writing.
+
+A file with the `c' attribute set is automatically compressed on the disk
+by the kernel. A read from this file returns uncompressed data. A write to
+this file compresses data before storing them on the disk.
+
+A file with the `d' attribute set is not candidate for backup when the
+.BR dump (8)
+program is run.
+
+A file with the `i' attribute cannot be modified: it cannot be deleted or
+renamed, no link can be created to this file and no data can be written
+to the file. Only the superuser can set or clear this attribute.
+
+When a file with the `s' attribute set is deleted, its blocks are zeroed and
+written back to the disk.
+
+When a file with the `S' attribute set is modified,
+the changes are written synchronously on the disk; this is equivalent to
+the `sync' mount option applied to a subset of the files.
+
+When a file with the `u' attribute set is deleted, its contents is saved.
+This allows the user to ask for its undeletion.
+.SH AUTHOR
+.B chattr
+has been written by Remy Card <card@masi.ibp.fr>, the developer and maintainer
+of the ext2 fs.
+.SH BUGS AND LIMITATIONS
+As of ext2 fs 0.5a, the `c' and `u' attribute are not honoured by the kernel
+code.
+.PP
+These attributes will be implemented in a future ext2 fs version.
+.SH AVAILABILITY
+.B chattr
+is available for anonymous ftp from ftp.ibp.fr and tsx-11.mit.edu in
+/pub/linux/packages/ext2fs.
+.SH SEE ALSO
+.BR lsattr (1)